hole bottom的例句大全

With high pressure air current passing the clearance between the double tube down to the hole bottom and carrying the rock cuttings through the internal pipe up to the earth surface.

它是由动力头回转双壁钻杆进行钻进，用高压气流沿管壁间隙通到孔底后，携带岩屑由钻杆中心孔返回地面。

The accumulation of high velocity jet on the hole bottom

高速射流在孔底的堆积

So that the hole bottom is damaged which is caused by the faulty operation can be prevented.

这样，在切削功能件切削时，限位杆或者限位杆下端不转，可以防止因误操作而使限位杆损伤孔底。

Study on Fluid Velocity at The Hole Bottom in Large Diameter Reverse Circulation Rotary Drilling

大直径反循环回转钻井底冲洗液流速的研究

Popularization and Application of The New Explosion Technology in Which Bamboo is Laid at The Blast Hole Bottom as Spacer

孔底竹筒间隔装药爆破技术的推广运用

Spacing charging at blast hole bottom is studied to reduce the seismic, which can make the ratio of vibration reduction to 10-15% and reduce the ratio of boulder and root as accessorial method.

还进一步进行了孔底空气间隔器的降震实验的研究，其降震率达10～15%，作为张沟采场辅助的降震措施，并且有效地降低了大块率和根底的产生。

It is assumed that the accuracy of internal thread depends on the accuracy of tap, while the positioning accuracy of threaded hole depends on that of bottom hole before threading.

总结出内螺纹的螺纹精度直接取决于丝锥的精度，而螺纹孔的位置精度却有赖于攻丝前螺纹底孔的位置精度。

The test and application of hole-bottom priming method in sublevel caving mining

孔底起爆法在无底柱分段崩落法中的试验与应用

Testing results indicate that the threshold pressure of jet aided drilling is 4.1 times of rock tensile strength and 26% of rock compressive resistance, also related with the bottom hole pressure difference and rock physical properties.

实验结果表明，射流辅助钻井的门限压力是岩石抗拉强度的4.1倍，是抗压强度的26%；还与井底压差及其它岩石物理力学性质有关。

Based on an investigation in the status of slim hole bit at home and abroad, a series of small-size(φ 92.08~ 158.75 mm) single cone bits with bottom water course are developed for slim-hole drilling.

根据国内、外小尺寸钻头的研究和使用状况，研制开发了9208～15875mm（3～6英寸）的小尺寸下水眼式单牙轮钻头系列产品。

Pelvic splanchnic nerves in general more difficult to identify specimens, half of the pelvis in the sagittal samples from the bottom to see the hole 2 to 4 presacral visceral pelvic nerves, the nerves more slender, the lateral ligament was small plexiform fibers.

骨盆内脏神经在大体标本上较难辨认，在矢状半骨盆标本中见到发自骶前孔2-4的骨盆内脏神经，该神经较纤细，在侧韧带处呈丛状的细小纤维。

The Mises stress acting on water-oil wells casing concern bottom hole pressure very nearly.

油水井套管所受Mises应力与本井的井底压力密切相关。

You'd better stop up the small hole at the bottom of your wash-basin.

你最好堵上你洗脸盆底上的小洞。

Study and application of new hinge type bottom hole assembly

新型铰接式钻具组合的研究与应用

According to many affection factors such as fractures space and number, etc, the bottom-hole pressure and fracture flow rate distribution of horizontal well are analyzed in this paper.

针对裂缝间距和裂缝条数等影响因素，对水平井井筒压力和不同裂缝的流量进行了分析。

Interpretation of modified isochronal well test data with bottom hole liquid loading

存在井底积液的修正等时试井资料解释方法

Experimental study on reasonable extra-depth of blast hole when space loading taking place at the bottom of inclined deep hole in open pit mine

露天矿倾斜深孔底部间隔装药爆破合理超深值试验研究

Post analysis of optimization of bottom-hole assembly in nu mh& 1 horizontal well

女MH&1水平井下部钻具组合的事后优化分析

A novel grass planting brick mainly comprises an upper brick surface, a bearing surface on the bottom part, an earth storage surface on the waist part, a grass planting hole and drainage holes.

一种新型植草砖，它主要包括上砖面、底部承重面、腰部储土面、植草孔、排水孔。

It also describes the new techniques and the results drilling tracing of deviation correction in the construction of the bottom of the plumb line hole. Finally, several views are out forward.

介绍了垂线孔孔底随钻跟踪定向纠偏新技术和施工效果，最后结合实例谈几点认识。